The probability of a couple who are both carriers for Tay-Sachs disease having a child with Tay-Sachs is:

Name: The probability of a couple who are both carriers for Tay-Sachs disease having a child with Tay-Sachs is:
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Question

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If both parents are carriers, each parent has a 1/2 chance of passing on the affected allele to their child. The chance of both parents passing on the affected allele is (1/2) * (1/2) = 1/4, which is the probability of their child having Tay-Sachs disease.

The Probability of a Couple Who Are Both Carriers for Tay-Sachs